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Learners work in pairs to create three simple types of bridges, a beam bridge, an arch bridge, and a suspension bridge.

This is an activity about dinosaurs, fossils, and the work of paleontologists. Learners use hand tools (paint brushes, scoops, and sifters) to unearth fossil specimens in tubs of birdseed.

In this activity (on pages 26-33), learners play parasitologists, solving several "mysteries" about people who got sick from various parasites. In teams of four, each member solves one mystery.

In this forensics activity, learners solve a mystery using “DNA” taken from the scene of the crime.

In this activity, learners map their world by drawing a plan of their bedroom.

Learners examine the manufacturing process while they make picture frames from cereal boxes.

Learners turn over a random selection of cards from a larger set. From the words revealed, they try to determine the sentence represented on the larger set of cards.

Learners investigate a pre-constructed mystery tube to determine its interior mechanism.

In this activity, pairs of learners model how scientists use craters to determine the ages of lunar surfaces. One partner keeps time while the other creates a painting for the other to interpret.

In this online interactive, learners use fossils to infer temperatures 55 million years ago, at the sites where the fossils were found.

In this health activity (page 5 of the PDF), learners will explore a unique connection betweeen the bones of the body.

In this art-related activity, learners make a coin rubbing—a process similar to what archeologists may do with ancient artifacts. This activity can be used in connection with a history or art lesson.

In this engineering activity, learners design their own board games.

In this activity, learners will train to improve lung, heart, and other muscle endurance as they walk a progressive, measured distance.

This quiz lets you estimate your annual radiation exposure.

In this two-part activity, learners map a navigation plan to get from Earth to Mars and back. In activity one, learners represent the orbital paths of Earth through dance and dramatic movement.

In this activity, learners will perform various investigations to understand the vestibular-ocular reflex and learn about the importance of visual cues in maintaining balance.

In this activity, learners explore how engineers have developed sorting systems which integrate into manufacturing and packaging processes. Learners explore how coins are made.

Coins are everyday objects which tell a lot about the people who use them.

In this activity, learners explore how rescue devices are designed to aid professionals during emergency situations.